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On 7/20/05, Richard Fish <bigfish@××××××××××.org> wrote: |
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> Mark Knecht wrote: |
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> |
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> >Hi, |
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> > I'm trying to get my mythfrontend box to allow a user to shut the |
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> >machine down without the use of a keyboard. We are only using remote |
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> >controls. suso doesn't seem to be an option because it requires a |
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> >password. (AFAICT) |
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> > |
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> > Is there some other way that I could make this work? |
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> > |
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> > |
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> > |
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> |
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> 2 options: |
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> |
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> 1. Sudo can be setup to allow some commands to be run without a |
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> password. I think this entry in /etc/sudoers should work: |
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> |
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> mythtv ALL = NOPASSWD: /sbin/shutdown |
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|
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Yes, I have this working. My problem with this solution was slightly |
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deeper. To get MythTV to execute this command I have to put 'sudo |
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shutdown -h now' in a setup screen within the setup portion of |
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mythfrontend. In a general sense I don't know how to do that without a |
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keyboard being attached to the machine. So far I haven't found where |
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MythTV stores this information so that I could edit it from an ssh |
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login. |
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Granted I can attach a keyboard for a few minutes when the machine is |
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here at my house, but I'm hesitant to use a solution that I cannot fix |
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via ssh when the machine is remote at my folks house. |
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|
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> |
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> I have not tested this, so if something goes wrong, you'll have to try |
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> and figure out "man sudoers". |
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> |
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> 2. Create a setuid (chmod 4711 /sbin/shutdown_by_anyone.sh) shell script |
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> that runs shutdown. Be sure to export the PATH, and unset LD_PRELOAD |
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> and LD_LIBRARY_PATH variables at the very beginning of the script. Also |
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> make sure the interpreter line is "/bin/bash --". This doesn't fix all |
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> of the security holes with setuid shell scripts, just the most common |
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> and easiest to fix... |
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I don't know how this is much of a security issue for me, but then |
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again I don't know much about security, and I suppose it could be if |
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someone plugs a keyboard in and wants to cause some harm. Shame on |
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them, but good of you to consider it. |
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Thanks, |
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Mark |
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|
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-- |
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